Improvement in lamp-chimneys



W. H. MASON.

LAMP-r:HIMNEY.

189,945.' Patented Apri1z4-1s77.

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NITED STATES PATENT FFIC.

WILLIAM` H. MASON, OF ILANTSVILLE, CONNECTICUT.

IMPROVEMENT IN LAMP-CHININEYS.

Specication forming part of Letters Patent 189,945, dated plfl 24" 1877; application filed March 9, 1871.

To all whom it may concern: v

Beit knownA that I, WILLIAM H. MASON, of Plantsville, in the county of Hartford and State of Connecticut, have invented a new Improvement in Lamp-Chimneys5 and I do hereby declare the following, when taken in connection with the accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specication, and represent, in-

Figure 1 a side view, and in Fig. 2 a vertical section This invention relates to an improvement in lamp-chimneys, and consists inan opaque chimney with an opening for the transmission of light, combined with a hinged or adjustable reflecting shade, as more fully hereinafter described.

A is the lamp-chimney, made from any suitfable metal, as tin, and of any desirable form,

according to the burner to which it is to be attached.- In one side an opening, B, ismade, lled with mica or other suitable transparent i material, through which the light will freely pass. Above this opening B a concave-shaped reflector, C, is hinged, as at a, the concave side being toward the opening B, and presenting thereto a bright or reecting surface.

The lightstriking the under surface of this shade is reected downward, and. at the same time the reector serves as a shade to prevent the light from striking the eye.

The bright surface of the interior of the chimney also serves as a reflector to concentrate the light upon the opening'B.

This construction of chimney is specially adapted to study, and classes of Work where the light is desired to be concentrated, and without materially lighting the surrounding space, and at the same time present a perfect shade for the eyes.

It will be understood that while this is termed a lamp-chimney, it is 'applicable alike to gas and other burners.

y I am aware that a metallic case for dark Y lanterns has been made with a door hinged in a similar manner to the shade in this case; but such construction I do not, broadly, claim.

I claim- The herein-descri bed lamp-chimney, Vconsisting of the metal body A, with a transparently closed opening, B, and shade C, all substantially as described.

WILLIAM H. MASON. l Witnesses:

E. B.. NEwELL, A. M. LEWIS. 

